[gtk/image-loading] texture: Implement GIcon and GLoadableIcon
- From: Benjamin Otte <otte src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/image-loading] texture: Implement GIcon and GLoadableIcon
- Date: Fri, 17 Sep 2021 02:09:25 +0000 (UTC)
commit fac0a5d373be7d8c464b3b6d7ab25ae005c35fa7
Author: Benjamin Otte <otte redhat com>
Date: Fri Sep 17 04:05:40 2021 +0200
texture: Implement GIcon and GLoadableIcon
This is mainly for feature parity with GdkPixbuf. And it doesn't hurt
anyone (I hope).
gdk/gdktexture.c | 103 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 102 insertions(+), 1 deletion(-)
---
diff --git a/gdk/gdktexture.c b/gdk/gdktexture.c
index 4107c73685..db8aa676ec 100644
--- a/gdk/gdktexture.c
+++ b/gdk/gdktexture.c
@@ -114,9 +114,110 @@ gdk_texture_paintable_init (GdkPaintableInterface *iface)
iface->get_intrinsic_height = gdk_texture_paintable_get_intrinsic_height;
}
+static GVariant *
+gdk_texture_icon_serialize (GIcon *icon)
+{
+ GVariant *result;
+ GBytes *bytes;
+
+ bytes = gdk_texture_save_to_png_bytes (GDK_TEXTURE (icon));
+ result = g_variant_new_from_bytes (G_VARIANT_TYPE_BYTESTRING, bytes, TRUE);
+ g_bytes_unref (bytes);
+
+ return g_variant_new ("(sv)", "bytes", result);
+}
+
+static void
+gdk_texture_icon_init (GIconIface *iface)
+{
+ iface->hash = (guint (*) (GIcon *)) g_direct_hash;
+ iface->equal = (gboolean (*) (GIcon *, GIcon *)) g_direct_equal;
+ iface->serialize = gdk_texture_icon_serialize;
+}
+
+static GInputStream *
+gdk_texture_loadable_icon_load (GLoadableIcon *icon,
+ int size,
+ char **type,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GInputStream *stream;
+ GBytes *bytes;
+
+ bytes = gdk_texture_save_to_png_bytes (GDK_TEXTURE (icon));
+ stream = g_memory_input_stream_new_from_bytes (bytes);
+ g_bytes_unref (bytes);
+
+ if (type)
+ *type = NULL;
+
+ return stream;
+}
+
+static void
+gdk_texture_loadable_icon_load_in_thread (GTask *task,
+ gpointer source_object,
+ gpointer task_data,
+ GCancellable *cancellable)
+{
+ GInputStream *stream;
+ GBytes *bytes;
+
+ bytes = gdk_texture_save_to_png_bytes (source_object);
+ stream = g_memory_input_stream_new_from_bytes (bytes);
+ g_bytes_unref (bytes);
+ g_task_return_pointer (task, stream, g_object_unref);
+}
+
+static void
+gdk_texture_loadable_icon_load_async (GLoadableIcon *icon,
+ int size,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GTask *task;
+
+ task = g_task_new (icon, cancellable, callback, user_data);
+ g_task_run_in_thread (task, gdk_texture_loadable_icon_load_in_thread);
+ g_object_unref (task);
+}
+
+static GInputStream *
+gdk_texture_loadable_icon_load_finish (GLoadableIcon *icon,
+ GAsyncResult *res,
+ char **type,
+ GError **error)
+{
+ GInputStream *result;
+
+ g_return_val_if_fail (g_task_is_valid (res, icon), NULL);
+
+ result = g_task_propagate_pointer (G_TASK (res), error);
+ if (result == NULL)
+ return NULL;
+
+ if (type)
+ *type = NULL;
+
+ return result;
+}
+
+static void
+gdk_texture_loadable_icon_init (GLoadableIconIface *iface)
+{
+ iface->load = gdk_texture_loadable_icon_load;
+ iface->load_async = gdk_texture_loadable_icon_load_async;
+ iface->load_finish = gdk_texture_loadable_icon_load_finish;
+}
+
G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GdkTexture, gdk_texture, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GDK_TYPE_PAINTABLE,
- gdk_texture_paintable_init))
+ gdk_texture_paintable_init)
+ G_IMPLEMENT_INTERFACE (G_TYPE_ICON,
+ gdk_texture_icon_init)
+ G_IMPLEMENT_INTERFACE (G_TYPE_LOADABLE_ICON,
gdk_texture_loadable_icon_init))
#define GDK_TEXTURE_WARN_NOT_IMPLEMENTED_METHOD(obj,method) \
g_critical ("Texture of type '%s' does not implement GdkTexture::" # method, G_OBJECT_TYPE_NAME (obj))
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